MagicDraw/Cameo: You can drag a Class symbol onto a Class symbol (in a Class Diagram) or a Block symbol or ValueType symbol onto or Block symbol (in a Block Definition Diagram) to create a new part property or value property
Internal Structure Compartment vs Composite Structure Diagram Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind hybrid diagram UML Class Diagram UML Composite Structure Diagram
For example, the block definition diagram and internal block diagram are similar to the UML class diagram and composite structure diagram respectively, but include extensions ... Source OMG Systems Modeling Language (SysML) 1.6
The SysML diagrams Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:01: [BRIEF] SysML Overview Slide kind SysML Package Diagram
MagicDraw/Cameo: If you want to show a Property or Port listed both in its corresponding compartment on a Class or Block symbol and as the end of an Association in the same diagram, set the display option Show Association Ends As Attributes/Ports to 'all'